#1C307E#1C307E

#1C307E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.134 H 267.7°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C307E
RGB	rgb(28, 48, 126)
HSL	hsl(228, 64%, 30%)
HSV	hsv(228, 78%, 49%)
CMYK	cmyk(77.8%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(23.23, 21.95, -46.44)
CIE-LCH	lch(23.23, 51.37, 295.30°)
OKLab	oklab(34.65% -0.0055 -0.1341)
OKLCH	oklch(34.65% 0.134 267.7)
XYZ	xyz(5.3004, 3.8666, 20.2016)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C307E #7E6A1C

analogous

#1C617E #1C307E #391C7E

triadic

#1C307E #7E1C30 #307E1C

tetradic

#1C307E #7E1C61 #7E6A1C #1C7E39

square

#1C307E #7E1C61 #7E6A1C #1C7E39

split-complementary

#1C307E #7E391C #617E1C

monochromatic

#060A1A #111D4C #1C307E #2743B0 #405ED5

Accessibility & contrast

On white

11.84

#1C307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1C307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C307E

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C307E	#FFFFFF	#000000	##FFFFFF
##1C307E	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c307e;
/* rgb */ color: rgb(28, 48, 126);
/* oklch */ color: oklch(34.7% 0.134 267.7);

Tailwind

colors: {
  custom: {
    50: '#6868a4',
    500: '#1c307e',
    950: '#000000',
  },
}

SCSS

$custom: #1c307e;
$custom-light: #6868a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c307e",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 227.755,
    "s": 63.636,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34651,
    "c": 0.13424,
    "h": 267.7
  },
  "luminance": 0.03867
}

Semantic roles & 50–950 ramp

primary

#1C307E

secondary

#B29B44

accent

#C541E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C307E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →